You shouldn’t have to pass this option.
I have on one owncloud server multiple users and I want to see their calenders on my Android phone. Unfortunately all calendars are green. What determines this color, can we have in the settings a selection of the color?
DavDroid currently doesn’t have a setting and uses the ones from the server (with green as fallback).
Setting the color only happens on first sync, an issue is open for syncing the color multiple times: https://github.com/bitfireAT/davdroid/issues/219
DAVdroid uses the
calendar-color property returned by the server (with green as fallback).
Set this property on your server and DAVdroid will import the calendars with the colors.
As @untitaker said, the colors are only imported when setting up the account. If you’re interested in synchronizing color changes from the server, please follow up in #219. If you just want to set your calendar colors, you may use the Calendarcolor app.